Originally Posted by Crestone

Have about 28K on my 2022 GLS 450. I ran into a store for 10 minutes and came back and it would not start and got a yellow 48v warning message. They were gathering data to send to the Mercedes engineers. Latest info i got was they need to check the intergrated starter bolts in the bell housing. The next steps would be a battery change. A little worried that a lose bolt in the transmission bell housing is their answer to a 48v error.

Originally Posted by Crestone

After a week I was told the issue was a issue with the 48v cable to the AC compressor not being tight enough Should be torqued to 16nm and was only 9nm. Really? It was tight but not tight enougn? A couple foot pounds of tourqe is going to cause a problem.